GoodSeeing
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Peringat

6.033° N   102.283° E  ·  11 M
38 /100
PEAK
Marginal, but there is a 3 hours gap from 03:00.
BEST WINDOW 03:00–06:00 · ASTRO DARK 02:00–06:00 · MOON 0%
Transparency
0.16
Seeing
1.00
Cloud
71%
Moon
0%

Fair tonight

Hour by hour, local to Peringat. Colour encodes the score and nothing else; every other measurement is luminance.

Sky state
Lighter = daylight and twilight  ·  unshaded = astronomical dark
Score
02
03
04
05
06
07
27
36
38
37
30
0
BEST WINDOW
Low cloud
12%
6%
0%
5%
1%
6%
Mid cloud
12%
6%
2%
9%
2%
1%
High cloud
84%
73%
76%
67%
88%
95%
Transparency
0.10
0.16
0.16
0.16
0.16
0.16
Seeing
1.00
1.00
1.00
1.00
1.00
1.00
Moon clear
down
down
down
down
down
down
Inspect

Cloud tracks show clear sky — a longer bar is better. The figure inside each track is the raw measurement.

Why this hour scored what it did
02 Poor · 27/100
Starting from
100
Cloud
−58
Transparency
−15
Seeing
−0
Moonlight
−0
Darkness
−0
Score
27
CLOUD 88% LOW 12% MID 12% HIGH 84% SUN -66.4° MOON -66.5° / 0% WIND 2 TEMP 25°
Excellent 75+ Good 55+ Fair 35+ Poor 15+ Not worth it Seeing is estimated from surface wind — see how we score.
Tonight's limiting factor
When a clear gap is worth driving for

Ask how long the gap is relative to your setup time and your exposure length. A two-hour gap is a real session for a visual observer and close to worthless for someone doing four-minute subs on a target that needs three hours.

What are you doing tonight?

The same forecast, weighted for the target. Planetary work barely cares about moonlight; long exposures die on high cloud a visual observer would never notice.

SET UP 03:30 · OBSERVE 04:00–05:00 · 1H · MEAN 35

Darkness and moonlight dominate. Faint fuzzies need a genuinely dark sky more than they need steady air.

020406
SET UP 02:30 · OBSERVE 03:00–07:00 · 4H · MEAN 44

Seeing is everything and moonlight is irrelevant. Bright targets punch through twilight, so darkness barely counts.

020406
TWILIGHT BEGINS 07:00MOONLIGHT IGNORED FOR THIS TARGET
NO USABLE WINDOW FOR THIS TARGET TONIGHT

Tolerates soft seeing, but high cloud wrecks a wide frame and moonlight raises the background everywhere.

020406
CLOUD NEVER DROPS BELOW 71%
NO USABLE WINDOW FOR THIS TARGET TONIGHT

Needs conditions to hold still for hours. Sustained transparency matters more than any single good hour.

020406
CLOUD NEVER DROPS BELOW 71%
NO USABLE WINDOW FOR THIS TARGET TONIGHT

Naked eye, whole sky. Total cloud and moonlight are the only things that count.

020406
CLOUD NEVER DROPS BELOW 71%
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The next week of nights

Tonight · 12 Aug
38
Fair
MOON 0%
03:00–06:00
Tomorrow · 13 Aug
61
Good
MOON 1%
21:00–03:00
Friday · 14 Aug
34
Poor
MOON 5%
Saturday · 15 Aug
45
Fair
MOON 10%
02:00–03:00
Sunday · 16 Aug
33
Poor
MOON 19%
Monday · 17 Aug
5
Clouded out
MOON 28%
Tuesday · 18 Aug
30
Poor
MOON 37%
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Nearby locations

About this forecast

Conditions for Peringat, Malaysia are computed from the MET Norway forecast model for these exact coordinates, combined with sun and moon positions we calculate directly. The score weighs cloud cover by layer, atmospheric transparency, estimated seeing, moonlight and how dark the sky actually gets. Read the full method →